Freezing can



J. BENTLEY.-

FREEZING CAN. 7 APPLICATION FILED APR 28, I922- PatentedSept. 5, 1922.

Patented Sept. 5, 1022.

UNHTED ANSON J. BENTLEY, 0F NILES, OHIO.

FREEZING CAN.

original lication filed December 2?, 1920, Serial No. 433,163. Dividedand this application filed April 23, 1922.

T 0 all 10 7mm it may concern Be it known that I, ANsoN J. BENTLEY, acitizen of the United States, and a resident of the city of Niles, inthe county of Trumbull and State of Ohio, have invented an Tmprovementin Freezing Cans, of which the following is a specification.

The present invention relates to improvements in freezing cans for usein the manufacture of ice and particularly to an improved constructionof can wherein means are provided for introducing air into the can toagitate the water which is to be frozen; this being the commonlyaccepted practice in what is known as the raw water can system of icemaking.

This application is filed as a, division of an earlier application filedby me on December 27, 1920, Serial No. 133,103. That application showedseveral embodiments of the invention disclosed therein and the presentapplication will be confined to one of those embodiments. The claimsappended hereto will be directed to the particular embodiment of theinvention shown herein; the invention common to the several forms beingclaimed in the above mentioned application.

In the raw water can system of ice making it is customary to immersefreezing cans in an appropriate freezing solution such as brine, andcirculate this freezing solution around the cans. In order that theimpurities commonly present in water available for the manufacture ofice may not be frozen into the finished cake, the water is agitatedduring the freezing operation. This agitation may be effected by an aircurrent and the action is such that the impurities are not frozen intothe cake but are collected in the small amount of water which remainsunfrozen in a pocket in the ice cake at the termination of the freezingperiod.

In order to introduce this air current ithas been customary to providesome sort of a separable tube or pipe extending from the top edge of thecan downwardly to a point at or near the bottom and there opening intothe interior of the can. This tube or pipe was so arranged that itsupper end could be connected with a source'of compressed. air and whenthe can was in use, air was forced through the tube out into the water,thus agitating it with the result above described. As pointed out in myearlier application, freezing cans so constructed have proved un- SerialNo. 557,145.

satisfactory for several reasons. If the tube or pipe is located on theoutside of the can 1t is apt to be jammed or torn loose or otherwise nured as the cans are being handled. The liability to injury of anyexposed part of the can will be immediately apparent when it is borne inmind that these cans usually contain three hundred or more pounds ofwater or ice as the case may be. If the air tube is located inside thecan it is very apt to be injured during the freezing of the water or tobe torn loose when the ice cake is dumped out of the can.

It is an object of the present invention so to construct a freezing canthat a conduit for the introduction of air may be provided without theuse of the usual separate tube or pipe, thus providing a distinctlysuperior construction and at the same time effecting a substantialeconomy in manufacture.

The embodiment of the invention which has been made the subject matterof this application is shown in the accompanying drawings wherein,

Figure 1 is a perspective view of a freezing can illustrating apreferred form of the invention selected for this application,

Figure 2 is a similar view of the inside of the can shown in Figure 1,

Figure 3 is an enlarged perspective view showing the construction of theair conduit, and

Figure 4; is a similar view showing a slight modification.

The general construction of the freezing can shown herein may be that ofLetters Patent No. 1,027,802, dated May 28, 1912, in

so far as the formation of the side walls and the bottom and the joiningof the several parts are concerned.

The can shown in, the drawings may be conveniently made of two sheets ofgalvanized metal cut and properly shaped so that one sheet will form theside wall 1 and the end wall 2, while the other sheet will form the sidewall 3 and the end wall 4. A third piece of sheet metal may be suitablycut and shaped to be assembled with the side walls and form the bottom 5of the can.

It is usual in freezing can construction to locate the seams atdiagonally opposite corners and with this in view the sheet forming wall2 is extended and bent to overlap the side wall 3, while the wall 4 issimilarly extended to overlap wall 1. It may be assumed that it isdesired to make only one air conduit and locate the same adjacent theseam between walls 2 and 3 in that corner of the can. To provide theembodiment of the present invention shown in the accompanying drawings,the wall member 3 is formed with an extension 3 which is bent through anangle of ap 'iroximately 15, extends for a short distance in thatdirection and is again bent in the same manner so that, when assembledwith the other wall member, a web portion 6 will extend across and bespaced from the corner formed by the short right angular extension ofthe end wall 2. Thus a triangular conduit 7 extending from a point at ornear the top of the can to a point at or near the bottom will be formedby the cooperating overlapped wall members. A suitable opening 8 for theescape of air to the interior of the can may be made by cutting away apart of the web 6 as in Figure 3 or by forming a hole 8 in the web andletting the web 6 extend to the bottom 5 of the can as in Figure 4.

In order to fasten the side walls firmly together a group of rivets 9may be passed through the wall 3 and right angle extension of wall 2 andanother group 10 through the wall 2 and the margin of the extension ofthe wall 8. If two separate members are used in making the side walls ofthe can, another group of rivets 11 will be used. These riveted seamsmay be rendered fluid tight by soldering in the usual manner.

Thereafter the bottom of the can may be assembled with the side wallsand suitably riveted and soldered in place. A reinforcing band 12 may beplaced around the top of the can in the usual mamier and rivetedseeurely.

An appropriate fitting, designed to cooperate with the particular systemin which the can is to be used, may be suitably attached at the upperopening of the air conduit.

It will be observed that the construction herein shown and describedprovides a very durable means of introducing air into the can. The wallsof the air conduit are of the same strength as the walls of the canitthe passage of air therethrough. Moreover, there is no tube or pipeexposed on the outside of the can.

It will be understood. that the invention may be variously modified andembodied within the scope of the subjoined claims.

I claim as my invention:

1. A freezing can, for use in the manufacture of ice, substantiallyrectangular in cross section and having the adjacent edge portions ofwall material overlapped and fastened. on both sides of a corner andspaced at the corner to form an air conduit integral with the walls ofthe can.

2. A freezing can for use in the manufacture of ice having an airconduit ex? tending from the upper edge thereof to a point near thebottom, said conduit being formed by an integral extension of a wallmember across a corner of the can between two groups of fastening meansand partially spaced from the adjacent wall.

A freezing can for use in the manu facture of ice having a fluid tightlap seam formed in one wall adjacent a corner of the can and an integralportion of the overlapped *all material extended beyond the corner andjoined to the adjacent wall, the overlying wall material being partiallyspaced to form an integral air conduit.

at. A freezing can for use in the manufacture of ice having a lap seamformed adjacent a corner and an air conduit formed in the corner by adiagonal extension of an inner wall member from said lap seam across thecorner to the adjoining wall memher.

5. A sheet metal container substantially rectangular in cross sectionhaving an air conduit formed adjacent one corner thereof by an integralextension of the material of one wall beyond the corner to the adjoiningwall, means joining together the overlapping wall material on each sideof the corner and means providing an opening from the conduit to theinterior of the container near the bottom thereof.

In testimony whereof, I have signed my name to this specification this24th day of April, 1922.

ANSON J. BENTLEY.

